Quick-detachable searchlight mounting



July 10, .1923; 1,461,285

J. .K. OLSEN Y QUICK DETACH AB LE SEARCHLIGHT MOUNTING Filed June 21 1922 Patented July 10, 1923.

'Joniv KJOLSEN', on'fon oiieo, ILLlNQISQ ASSiGNOR- 'To STEWART-WARNERsrnnnom j EJC'EB oonronn'rromfor 'cnror-ieog rmmois, A oo-nrona'rron.ony nGINI I 1 QUlICK-DETACH ABLE snenonnrenr ,itrountrme. "j

Application filed-Junelll, 1922. Serial'N0.-569,812.

To all whom it mag 'cohcermfl I a Beit knownthat L' Jo N K; OLS.EN, -a citizen of the United States,;-res1d1ng in the city of Chicago, in the county of Cook and I 5 State of Illinois; have invented-cer'tain. .new and useful Improvementsfin Quick-Detach:

able. Searchlight -Mountings, of I which the following is. a specification, referencebe-:

ing had to the accompanying drawings, '10 forminga part thereof.) I

' The purpose of this invention is' to @p ro v vide, a simple and quickly adjustablecon nection for. detachably and swivellyf. mounting a-lamp body such as thatot ai vehicle searchlight of the. type'carried on automobiles. It consists of certain teatures and elements vof construction inc 'combination. as I hereindescribed and shown "in the drawings and as indicated bythe claims. I Q In the drawings body and mountingbracket thereforemf bodying thisinventi'on.'- U

Figure 2 is a vertical detail section taken as indicated at the line 2--2 gonFigure 1,

be secured :to any convenient part of. the vehicle body such. as. the windshield frame,

or otheriupright member indicated at -6. I -f It 40 maybe understood that the}[casing,,1, en-

closes an incandescent electric bulb, 7, to

which current is supplied through suitable lead wires, 8,. entering the casingindependently of its mounting and extendingto source of electrical energy on the vehicle, not shown. The present invention, relates to a quick detachable-connection between the lamp casing, 1. and the bracket, arm,

4, so as to permit the lamp to be used-for inspection of the vehicle or any other purpose Within such range as the length of the lead wires,-8, will permit.

To this end the detachable connection is included in the vertical swivelby which the bail, 3, is attached to the bracket arm, 4,

Figure .1 is a front elevat'oirof alampfl the-bail, 3. But at; all times the bushing,

the bail, "3, and the body or casing, '1, may" beof a per-manent'nature. At themiddle ofits zlength'directly above the lamp body,-;

: 1,-thebail, 3, islprovided with a stud bolt,

9,: whose shank is corrugated byknurlingat 10. adjacent its head, 11, soivthat when forced tightly into the 0pening 'finx"the Jbail,v'3, it

will be heldnon-rotatably therein andop- I I I e'rate as an integralwpart *of 'the'bajil; The.

head, 11, is accommodated;in a'=-counter-j" bfored portion, 12, of thebail,3', an'd."the

while thetrunnion connections, 2, 2, between I smooth portionof the shank. slips' snugly intoa sleeve or bushing, 13,-rotatably mount-- I 'fed in' the outer end or the bracket arm, 4. A special captive nut, 14, isfa-l'so rotatably engaged. with the bracket arm, 4,.just: above the bushing, 13, and axially aligned'therd sembl'ed relation"; Thenut, -1 4,'"is permawith so that the threaded bore, l 5,""ofisaid I i nut, 14, may engage the threads, 16,-oi thestud bolt, 9,-for holding .the?p ar-tsin.:aS- Y nently associated 1withzthe:bracket,arm, 4',

by :means 'Ofa' spring ring, .17, split and I I grooves, 19 and 20 in thenutandbi'acket arm,;'respectively. It willbeunderstood'that'f the groove,;19, is deep enough so 'that, in j assembling the parts the ring,--,18, -may be lapped as indicated .at 18' ,.andi.1engaging,.

compressed to lie wholly within 1 this roove,

while the reduced portion-[of fthe nutp is entered in the counterbore, 21, of the; arm,

,4; and thatas the ring, 17, arrives in reg-g istration withv the groove, '1 20, itflwill ex pand to. engage sa;id groove): andg'cthus lock the nut .in position'while leaving :--it free-a0.

rotate. Preferably the" nut" is formed with F ingthe upstandingflange, 23, oftlie bracket." arm, 4, in which the .I counterbore, R21,- is formed so; as to exclude dust .and. WateII from thejoint as far as possible." I

The am .isformed atits ib'ivei: c

end with ahead- 24, against; which I adished: spring washer,;2 5, reacts frQm the: base-or .counterbore, 26,in the arm, 4, to. furnish sufiicient friction to insure that the lamp body, 1, will, remain at any position "at which it may l e-adjusted upon thevertical swivel. I I

13, is positively locked to the bail, 3, by i 7 means of a diametrically located ton'gue,27,

When the parts are assembled, the bushing,

formed on the lower side of its head, 24, and engaging a milled groove, 28 in the top of 13, remains permanently associated with the bracket arm, 4:, a'flange, 29, at the upper end of the bushing being spun over into the counterbore, 21, of the arm as shown clearly in Figure 2.

Thus to release the lamp body from the bracket, 4, it is only necessary to unscrew the nut, 14:, thus permitting the stud, 9, to slip down through the bushing 13, as indicated in Figure 2. To reassemble the parts, the stud, 9. is moved up through the bushing, 13, and the nut, 14, is engaged with the threads, 16, until the bail. 3, is drawn tight ly against the flange, 24, of the bushing,

13, the nut, 14-, at the same time engaging the;

upper flange, 29, of said bushing as shown in Figure 3. By virtue of the rib or tongue, 27, and its co-operating groove, 28, in the hail, the angular adjustment of the lamp with respect to the bracket, 4, will remain unchanged by the removal or replacement of the lamp. It-will also be noted that the adjustment of the nut, 14, does not affect the tension of the spring washer, 25; thus the friction of the-swivel mounting is independent of the detachable feature.

I claim: V

1. In combination with a lamp body and a supporting bracket therefor, a stud associated with the lamp body and a captive nut carried rotatively on the bracket, together with a spacer sleeve rotatively mounted in said bracket in axial alignment with the bore of the nut, said nut being threaded to fitthe stud, and the sleeve being formed to fit said stud whereby the sleeve may be fixedly associated with the lamp body while rotatively engaged in the bracket when the parts are assembled.

'2. In the combination defined in claim 1, means positively interlocking the sleeve with the lamp body to insure that said parts shall turn together when assembled.

3. In the combination defined in claim 1, means permanently retaining the sleeve against axial'removal from the bracket.

4;. In the combination defined in claim 1, frictional means acting between the sleeve. and the bracket in which it is rotatively mounted for holding said sleeve and the lamp body at any desired position of adjustment in the bracket, i

5. In the combination defined in claim 1, said sleeve being flanged at both ends for retention in the bracket, and friction means acting between-said bracket and one flange of the sleeve to hold the sleeve in adjusted relation.

6. In combination with a lamp body, a supporting bracket therefon and aaba-il in which the lamp body is pivotally mounted, means pivotally connecting said bail to the bracket comprising a threaded stud fitted in the bail, a captive nut rotatively carried in the bracket and threaded to fit the stud, and a sleeve journaled in the bracket ,in axial alignment with said nut, and having a bore to fit'the stud. I

7. In the combination defined in claim '6, the bail having a diametral groove or slot. and the sleeve being ribbed at one end for interlocking engagement with said slot of the bail when the parts are assembled.

8.7In the combination defined in claim 6. the sleeve being also captive in the bracket so that the sleeve and nut shall remain with the bracket, and the stud shall go withlthe bail and lamp body when the latter are detached from the bracket by unscrewing the nut; t

9. In the combination defined in claiml,

the bracket having a bore for the sleeve.

counterbored at both ends, said sleeve having a head in the counterbore adjacent the lamp body with a spring washer under said head for frictionally retaining the sleeve in ad-. justed relation, the opposite end of said sleeve being formed with a flange in the other counterbore of the bracket, the said nut having a portion entering said other counterbore, said portion of the nut and the counterbore of the bracket having registering grooves with a yieldingly expansive locking ring therein to retain the nut, and the nut being dimensioned to, bear upon the flanged endof the sleeve.

10. In the combination defined in claim 1, said bracket having-an upstanding annu lar'portion counterbored to receive a cylindrical portion of the nut, said annular part of the bracket and the entering portion of the nut being mutually engaged. for reten tion of the nut on the bracket, and the nut having'a skirt portion laterally overhanging said annular part of the bracket to exclude dirt and moisture therefrom.

In testimony whereof, I have hereunto set my hand at Chicago, Illinois, this 16th day of June, 1922.

' J GEN K. OLSEN, 

